ip1718lf ETC-unknow, ip1718lf Datasheet - Page 22

• Manufacturer Part Number: ip1718lf
• Description: 18-port 10/100mbps Smart Switch Controller
• Manufacturer: ETC-unknow

Copyright © 2003, IC Plus Corp.
2FH
30H
31H
32H
33H
Register
Address
bit[0] : Hash algorithm selection
bit[1] : Address table aging function disable
bit[3:2] : Trunk ID hash algorithm selection
bit[4] : Broadcast Strom Control enable
bit[5] : Auto turn on/off flow control when priority queue enable
bit[6] : Broadcast frames egress is blocked for port 17
bit[7] : Broadcast frames egress is blocked for port 18
bit[7:0] : Aging timer
The aging time is about : (aging_timer + 1) x 30.7 +-6.7% sec.
bit[14:8] : Broadcast storm control threshold
The broadcast frame number allow in one time unit
The time period is 1ms for 100M speed
The time period is 10ms for 10M speed
Enable Source MAC address learning function for port16~1
bit[15:0] : 0: disable learning
Enable Source MAC address learning function for port 18~ port 17
bit[9:8] : 0: disable learning
Security configuration
bit[0] : Drop the unknown SA frame going to port 18
bit[1] : forward unknown Source MAC address frame when the
0 : aging function enabled
1 : aging function disabled
0 : CRC mapping
1 : Direct mapping
0 : broadcast storm control disabled
1 : broadcast storm control enabled
0 : normal flow control
1 : auto turn on/off flow control
0 : Broadcast frames send to port 17
1 : Broadcast frames do not send to port 17
address learning function is disabled
0 : forward
1 : Drop
0 : drop the frame with unknown source MAC addreess
1 : forward the frame with unknown source MAC addreess
1: enable learning
2'b00 : Port ID(the least significant 2 bits of the result of
Note: The port ID is counted from 1 to 18.
2'b01 : SA(the least significant 2 bits of the source MAC
2'b10 : DA(address bit 16 is mapped to trunk ID[1] and
2'b11 : SA XOR DA(the result of the XOR operation
1: enable learning
port ID +1);
address)
address bit 0 is mapped to trunk ID[0] );
described above)
Register Description
22/33
Preliminary Data Sheet
R/W
R/W
R/W
R/W
R/W
Attribute
IP1718 LF-DS-R05
IP1718 LF
January 27, 2005
8’h0
8’d9
8h’7f
16’hffff
10’h3ff
2’b10
Default
value